Investors & landlords

I have a similar situation, my niece who is on SSI rents a room from me in my home under a rental agreement that is with  Social Security as part of her SSI package.

 

I have filed as head of household with her as a qualifying relative dependent  In previous years prior to her being on SSI. 

 

 So, if I provide more than half her support  utilizing the IRS Worksheet for Determining Support in Publication 501, can I again file as head of household even though she also rents a room from me? Thank you.